Revenue Earning Equipment Schedule of Revenue Earning Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Revenue Earning Equipment [Line Items]
Cost	$ 12,815,842	$ 12,480,342
Accumulated Depreciation	(4,566,525)	(4,332,620)
Net Book Value	8,249,317	8,147,722
ChoiceLease
Revenue Earning Equipment [Line Items]
Cost	9,799,028	9,486,977
Accumulated Depreciation	(3,284,267)	(3,031,937)
Net Book Value	6,514,761	6,455,040
Commercial rental
Revenue Earning Equipment [Line Items]
Cost	2,599,043	2,499,010
Accumulated Depreciation	(973,126)	(935,346)
Net Book Value	1,625,917	1,563,664
Held for sale
Revenue Earning Equipment [Line Items]
Cost	417,771	494,355
Accumulated Depreciation	(309,132)	(365,337)
Net Book Value	108,639	129,018
Assets Held under Capital Leases
Revenue Earning Equipment [Line Items]
Cost	29,000	43,000
Accumulated Depreciation	$ (14,000)	$ (22,000)